Taung Mai Lu Lu, San H'ng Paik, Aung Min Min, Uyama Hiroshi, Mohamed Ainun Zuriyati, Bahrin Ezyana Kamal, Masarudin Mas Jaffri, Mohamad Zulkifli Azra Afrina Binti, Chew Tung Woey
Higher Education Centre of Excellence (HiCoE), Institute of Tropical Forestry and Forest Products (INTROP), Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia.
Department of Chemistry, University of Myitkyina, Myitkyina 01011, Kachin State, Myanmar.
Polymers (Basel). 2024 Sep 24;16(19):2683. doi: 10.3390/polym16192683.
Antimicrobial coatings are becoming increasingly popular in functional material modification and are essential in addressing microbial infection challenges. In this study, the phytochemical and antimicrobial potential of aqueous, 80% methanol and 80% ethanol pod extracts of (Willd.) DC (AC) and its application in the green in situ (one pot) synthesis of silver nanoparticles on Cellulose nano fibrils (CNF) and Waterborne polyurethane (WPU) were prepared. The phytochemical evaluation of crude extracts showed the presence of alkaloids, flavonoids, phenols, tannins, terpenoids, saponins, steroids. The surface plasmon Resonance peak of CNF/AC-AgNPs was 450 nm and the FTIR result confirmed functional groups such as carbonyl, phenols and carboxyl were present which was important for the bio-reduction of silver nanoparticles. The crude AC aqueous pods extract against Gram-positive and Gram-negative bacteria compared with AC ethanol and AC methanol extracts. The WPU/CNF/AC-AgNPs composite dispersion was also good in terms of its antibacterial activities. The WPU/CNF/AC-AgNPs nanocomposites could be applied as bifunctional nanofillers as an antimicrobial agent in food packaging systems and other biological applications.
抗菌涂层在功能材料改性中越来越受欢迎，对于应对微生物感染挑战至关重要。在本研究中，制备了（Willd.）DC（AC）的水提物、80%甲醇提取物和80%乙醇提取物的植物化学成分及其抗菌潜力，并将其应用于在纤维素纳米纤维（CNF）和水性聚氨酯（WPU）上绿色原位（一锅法）合成银纳米颗粒。粗提物的植物化学成分分析表明存在生物碱、黄酮类、酚类、单宁、萜类、皂苷、甾体。CNF/AC-AgNPs的表面等离子体共振峰为450nm，傅里叶变换红外光谱（FTIR）结果证实存在羰基、酚类和羧基等官能团，这对银纳米颗粒的生物还原很重要。与AC乙醇提取物和AC甲醇提取物相比，AC水提物对革兰氏阳性菌和革兰氏阴性菌有抑制作用。WPU/CNF/AC-AgNPs复合分散体的抗菌活性也很好。WPU/CNF/AC-AgNPs纳米复合材料可作为双功能纳米填料，用作食品包装系统和其他生物应用中的抗菌剂。
